<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id = "app">
        <p id = "name"></p>
    </div>
    <script>
        var obj = {}
        Object.defineProperty(obj, 'name',{
            get:function(){
                return document.querySelector("#name").innerHTML()
            },
            set:function(val){
                return document.querySelector("#name").innerHTML = val
            }
        })
        obj.name = 'Jerry'
    </script>
</body>
</html>